docs: def _mute(self):
          """ mute vlc """
  
          if self.muted:
              self._sendCommand("volume {}\n".format(self.actual_volume))
              if logger.isEnabledFor(logging.DEBUG):
                  logger.debug('VLC unmuted: {0} ({1}%)'.format(self.actual_volume, int(100 * self.actual_volume / self.max_volume)))
          else:
              if self.actual_volume == -1:
                  self._get_volume()
              self._sendCommand("volume 0\n")
              if logger.isEnabledFor(logging.DEBUG):
                  logger.debug('VLC muted: 0 (0%)')